A2M and open-angle glaucoma: Up: APOC3 (6.3-fold POAG vs. CT, 6.5 PEXG, vs. CT), APOE (3.6-fold POAG vs. CT, 3.4-fold PEXG vs. CT), TTR (2.1-fold POAG vs. CT, 2.3-fold PEXG vs. CT), α2M (7.0-fold POAG vs. CT, 7.5-fold PEXG vs. CT)